public abstract class SimpleCollector extends java.lang.Object implements Collector, LeafCollector
Collector
implementation that is used to collect all contexts.Constructor and Description |
---|
SimpleCollector() |
Modifier and Type | Method and Description |
---|---|
abstract void |
collect(int doc)
Called once for every document matching a query, with the unbased document
number.
|
protected void |
doSetNextReader(LeafReaderContext context)
This method is called before collecting
context . |
LeafCollector |
getLeafCollector(LeafReaderContext context)
Create a new
collector to collect the given context. |
void |
setScorer(Scorer scorer)
Called before successive calls to
LeafCollector.collect(int) . |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
needsScores
public final LeafCollector getLeafCollector(LeafReaderContext context) throws java.io.IOException
Collector
collector
to collect the given context.getLeafCollector
in interface Collector
context
- next atomic reader contextjava.io.IOException
protected void doSetNextReader(LeafReaderContext context) throws java.io.IOException
context
.java.io.IOException
public void setScorer(Scorer scorer) throws java.io.IOException
LeafCollector
LeafCollector.collect(int)
. Implementations
that need the score of the current document (passed-in to
LeafCollector.collect(int)
), should save the passed-in Scorer and call
scorer.score() when needed.setScorer
in interface LeafCollector
java.io.IOException
public abstract void collect(int doc) throws java.io.IOException
LeafCollector
Note: The collection of the current segment can be terminated by throwing
a CollectionTerminatedException
. In this case, the last docs of the
current LeafReaderContext
will be skipped and IndexSearcher
will swallow the exception and continue collection with the next leaf.
Note: This is called in an inner search loop. For good search performance,
implementations of this method should not call IndexSearcher.doc(int)
or
IndexReader.document(int)
on every hit.
Doing so can slow searches by an order of magnitude or more.
collect
in interface LeafCollector
java.io.IOException
Copyright © 2000–2019 The Apache Software Foundation. All rights reserved.